我正在开发一款包含相机功能的应用程序，用户可以一个接一个地捕获多达5张图像。我正在使用avfoundation捕获多个图像，所有东西都正常工作但只有问题是当我点击捕获时按钮，需要大约5秒才能捕获，任何研究都可以帮助我，如果我错了吗？我的代码如下。
码
AVCaptureSession *session = [[AVCaptureSession alloc] init];
[session beginConfiguration];
session.sessionPreset = AVCaptureSessionPresetPhoto;
-(void)takePhoto :(UIViewController *)sender
{
if ([CustomCamera isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera])
{
currentPicker = self.picker;
self.picker.sourceType = UIImagePickerControllerSourceTypeCamera;
if (self.mediatype == VIDEOTYPE)
{
self.picker.mediaTypes = [NSArray arrayWithObject:(NSString *)kUTTypeMovie];
self.picker.videoQuality = UIImagePickerControllerQualityTypeMedium;
self.picker.videoMaximumDuration = 180.0f;
}
else{
//self.multipleImagePicker = [[RPMultipleImagePickerViewController alloc] init];
self.multipleImagePicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
self.multipleImagePicker.delegateCaptureImage = self;
self.picker.delegate = self;
self.picker.mediaTypes = [NSArray arrayWithObject:(NSString *)kUTTypeImage];
self.picker.showsCameraControls = NO;
self.picker.navigationBarHidden = YES;
self.picker.toolbarHidden = YES;
[self setCameraOverlayView];
//Added by jigar...
camOverLayView.view.alpha = 0.0f;
self.picker.cameraOverlayView = camOverLayView.view;
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDelay:2.2f];
camOverLayView.view.alpha = 1.0f;
[UIView commitAnimations];
//setting delay to capture screen
}
[self presentViewController:self.picker animated:YES completion:nil];
}
else
{
UIAlertView *alert =[[UIAlertView alloc] initWithTitle:nil message:@"No Camera Available in Device" delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil, nil];
[alert show];
}
}